Only 10.5 grams. (std are 19 grams ea.) Works with std valves and will work with our 39mm-42mm and 34mm-36mm 7mm stem valves. Set of 12. .Only 10.5 grams. (std are 19 grams ea.) Works with std valves and will work with...

7mm Silicone bronze valve guides for VR6 engines.These have the correct 1mm step so the retainer will not hit the seal seal.7mm Silicone bronze valve guides for VR6 engines.These have the correct 1mm step...